How do you keep everything separated? Well, there is a cool trick that students learn in Japan. They make a table of contents on the last page of a notebook. It's a way to conserve paper and resources, since every notebook gets used 100%.
You write as you need to through out your journal. No, skipping around, looking for lost notes. Then mark the page for each topic used, and use the reference in the back of the notebook.
I've left some really boring pictures to give you a general idea.
|This is what the pages of my notebook now look like.|
|This is what my last page of my journal looks like.|